Air conditioner energy consumption charging method and device in office building with cold and heat source centralized supply

Abstract

The invention discloses an air conditioner energy consumption charging method and device in an office building with cold and heat source centralized supply. The air conditioner energy consumption charging method in the office building with centralized cold and heat source supply comprises the steps that a user area is obtained, and the user area comprises a room area and a public area corresponding to a user; energy consumption output by all the air conditioner terminals in the user area is collected; and the real-time energy consumption of all the air conditioner terminals in the user area in the period is accumulated, and the air conditioner energy consumption cost of the user is calculated according to a preset charging mode. According to the technical scheme, scientific and reasonable charging of the air conditioner energy consumption is achieved by collecting the operation data of the air conditioner system, systematically analyzing the equipment relation, accurately associating the space area and establishing the detailed charging rule base. The billing fairness and accuracy are improved, the situation that the user needs to undertake the fee without using the demand is avoided, the asset operation and maintenance efficiency and the user satisfaction degree are improved, and the intelligent development of property management is promoted.

Description

Technical Field

[0001] The present invention relates to the technical field of central air conditioners, and in particular to a method and device for charging energy consumption of air conditioners in office buildings with centralized cold and heat sources. Background Art

[0002] As people's requirements for office air quality continue to increase, more and more office buildings have begun to use centralized variable air volume (VAV) air conditioners. Usually equipped with centralized energy stations to provide the cold and heat sources required for air conditioning operation. Variable air volume air conditioners have many advantages, including: independent control of air temperature in each area, high air quality, variable frequency speed regulation of fans to adjust air volume, strong dehumidification capacity, and the use of fresh air for natural cooling. However, there are also some disadvantages, mainly reflected in the large initial investment in equipment, as well as the complexity of the design, construction and management process. At present, centralized variable air volume air conditioners have become the standard configuration of high-end office buildings and have become an important reference indicator affecting the occupancy rate of office buildings. The current allocation method of air conditioning costs for users in office buildings is still relatively simple and traditional, mainly including the following two methods: one is to charge according to the fixed air conditioning unit price based on the user area and usage time; the other is to multiply the monthly air conditioning energy consumption cost by a certain floating coefficient and allocate it according to the proportion of the usage area of ​​each user. These existing billing methods have many unreasonable aspects and provide a certain profit space for the property, which are specifically manifested as follows:

[0003] 1. Some users may not actually use the air conditioner, but still need to bear the corresponding fees, which leads to unfair charges;

[0004] 2. Due to the inconsistency of overtime hours for different users, the calculation of overtime air conditioning costs is complicated. The property management usually adopts a simple method of setting unit prices according to unit time and area, which results in excessively high overtime air conditioning costs;

[0005] 3. It is difficult to effectively calculate the energy consumption of public areas, and the way to allocate the costs to each user is unclear. Usually, the cost is borne by the building owner or some major users;

[0006] 4. The area charging method is fixed. Users tend to lower the set temperature in summer and raise it in winter, or open doors and windows at will, resulting in serious energy waste.

[0007] Statistics show that the building energy consumption intensity of variable air volume air conditioning is significantly higher than that of decentralized air conditioning. One of the important reasons is that the existing billing method is unreasonable, resulting in serious energy waste. Taking the conventional household charging of central air conditioning as an example, its characteristic is that a flow monitoring device is installed on the water inlet pipe on each user side, and household billing is performed by monitoring flow changes. However, in actual building applications, there are many limitations: due to the large number of floors and pipelines, the installation of remote flow meters on the water pipes on each user side requires a large initial investment in equipment, which is difficult for the asset party to accept; the metering instrument needs to be calibrated regularly after installation, but the flow meter is usually concealed in the mezzanine or ceiling, which is difficult to re-debug, and the data accuracy decreases after long-term operation; the users inside the building may change, and the billing method is relatively fixed, and it is difficult to adjust the settlement method according to the changes in users. Therefore, the conventional household charging is only applicable to scenarios where the number of users on the floor is small and relatively fixed. It is less applicable to most urban office buildings and is difficult to promote.

[0008] The existing technology still has the following shortcomings: although it is not necessary to install energy meters or flow meters at each air-conditioning terminal, energy meters still need to be installed in each supply area. For office buildings with many floors, the investment cost is still high; the effective operation time is calculated based on the terminal fan gear signal and the corresponding operation time, ignoring the difference between terminal equipment, and it is difficult to accurately measure the impact of the operation effect of each terminal through correction of spatial environment temperature and humidity; when calculating the energy of each terminal, it is not clear how to divide the air conditioning energy consumption of public areas or temporary use places to each user. The existing centralized variable air volume air conditioners and their billing methods have many shortcomings in practical applications, and further improvements are urgently needed to achieve more reasonable and efficient energy management and cost sharing. Summary of the invention

[0009] The present invention provides a method and device for charging air conditioning energy consumption in an office building with centralized cold and heat sources, which is used to effectively improve the scientificity and economy of air conditioning energy consumption management and is suitable for energy management needs of various office buildings.

[0010] According to a first aspect of the present invention, a method for charging air conditioning energy consumption in an office building with centralized cold and heat sources is provided. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources comprises:

[0011] Acquire a user area, where the user area includes a room area and a public area corresponding to the user;

[0012] Collecting the output energy consumption of all air-conditioning terminals in the user area;

[0013] The real-time energy consumption of all air-conditioning terminals in the user area within the period is accumulated, and the air-conditioning energy consumption fee of the user is calculated according to a preset billing method.

[0014] In one embodiment, obtaining the user area includes:

[0015] Each room area has a corresponding relationship with the public area. The same public area corresponds to at least one room area, and one room area corresponds to at least one air-conditioning terminal.

[0016] Each user has a corresponding relationship with the room area, and any user corresponds to at least one room area;

[0017] The user area includes all room areas corresponding to the user and the public area corresponding to all the room areas.

[0018] In one embodiment, obtaining all air-conditioning terminals in the user area includes:

[0019] Based on the real-time data from the building automation and data monitoring terminals, it is stored in the real-time database;

[0020] According to the air-conditioning terminals in all areas in the prior configuration information and combined with the user area, all terminal air-conditioning corresponding to any user are analyzed.

[0021] In one embodiment, the air conditioning energy consumption fee of the user is calculated according to a preset billing method, including:

[0022] The calculating the air conditioning energy consumption fee of the user according to the preset charging method includes:

[0023] The supply air cooling and heating amount is calculated according to the VAV and FCU method. The supply air cooling and heating amount is determined by one or more of the supply air temperature, return air temperature, and the water valve status in the real-time air volume. The calculation formula is as follows:

[0024] Q i =εV i ΔT i / 3600

[0025] Among them, ΔTi is the real-time difference between the supply air temperature and the room temperature, V i For real-time operating air volume, Q i is the real-time air supply cooling and heating capacity, and ε is the cooling and heating calculation coefficient.

[0026] In one embodiment, the step of calculating the air conditioning energy consumption fee of the user according to a preset charging method further includes:

[0027] The supply air cooling and heating amount is calculated according to the AHU method. The supply air cooling and heating amount is determined by one or more of the supply air temperature and humidity, the fresh air valve opening, the fresh air temperature and humidity, the return air temperature and humidity, the blower frequency or the air volume, the water valve switch state and the air supply state. The calculation formula is as follows:

[0028] qi =0.1ρ a V i |h im -h is

[0029] Among them, ρ a is the variable air density, V i is the real-time air flow rate, h im is the enthalpy value of the new return air after mixing at time i, h is is the air supply enthalpy value at time i. If V is not directly collected i For equipment with a rated air volume of 1000MW, V is calculated by using the fan frequency f and the rated air volume C. i , the formula is as follows:

[0030] V i =f / 50*C

[0031] According to the enthalpy value of supply air temperature and humidity hs, the fresh air temperature and humidity value hn, the return air temperature and humidity value hr, and the fresh air threshold opening percentage K, the enthalpy value hm of the fresh and return air mixture is calculated as follows:

[0032] h m = K·h r +(1-К)·h n

[0033] Among them, h s The enthalpy of air supply is h n is the fresh air enthalpy and h r is the return air temperature and humidity enthalpy.

[0034] In one embodiment, it further includes:

[0035] Analyze the VAV ratio of each room on the same floor, and calculate the VAV ratio of a certain user in combination with all the rooms owned by the user on the floor. Calculate the energy consumption of the user's room area based on the air supply cooling and heating capacity of the parent node AHU and the VAV ratio of the user, as well as the energy consumption of the FCU of all the rooms of the user;

[0036] According to the sum of the energy consumption of each room on the floor and the first total energy consumption of the VAV and FCU on the floor, the ratio of the net total energy consumption of the public area to the sum of the energy consumption of each room on the floor is calculated, and the ratio is determined to be a first common area ratio. The energy consumption of the common area of ​​the user is the energy consumption of the room area multiplied by the first common area ratio;

[0037] Obtaining the gross total energy consumption on the floor and the net total energy consumption on the floor, and calculating a second shared ratio, wherein the shared energy consumption of the user is the energy consumption of the room area multiplied by the second shared ratio;

[0038] The total energy consumption of the user is the sum of the energy consumption of the user's room area, the energy consumption of the common area and the common energy consumption.

[0039] In one embodiment, it further includes:

[0040] The energy consumption of the first public use area of ​​the user is calculated based on the ratio of the area of ​​the user's room area to the area of ​​all rooms in the building and the energy consumption of the first public use area;

[0041] The energy consumption of the second public area for a user is obtained by counting the energy consumption during the time period when the user uses the second public area.

[0042] In one embodiment, it further includes:

[0043] The energy consumption of the user's overtime work is calculated by changing all rooms on a certain floor into overtime rooms;

[0044] The energy consumption of the user's room settlement deviation is calculated based on the deviation value obtained from the bill usage and the collected usage, as well as the ratio of the user's room energy consumption to the total room energy consumption;

[0045] The energy consumption of the user's calculated settlement deviation is calculated based on the deviation between the total cooling and heating data within the period and the cumulative value collected daily within the period, as well as the ratio of the user's room energy consumption to the total room energy consumption.

[0046] According to a second aspect of the present invention, there is provided an air conditioning energy consumption billing device in an office building with centralized cold and heat sources, comprising:

[0047] An acquisition module, used for acquiring a user area, wherein the user area includes a room area and a public area corresponding to the user;

[0048] A collection module, used to collect the output energy consumption of all air-conditioning terminals in the user area;

[0049] The calculation module is used to accumulate the real-time energy consumption of all air-conditioning terminals in the user area within a period, and calculate the air-conditioning energy consumption fee of the user according to a preset billing method.

[0050] According to a third aspect of the present invention, there is provided an electronic device, the electronic device comprising: a communication interface, a processor, and a memory;

[0051] The memory is used to store program instructions, and when the program instructions are executed by the processor that is communicatively connected to the memory through the communication interface, any of the above-mentioned air conditioning energy consumption billing methods in office buildings with centralized cold and heat sources is implemented.

[0052] According to a fourth aspect of the present invention, there is provided a computer-readable storage medium having computer program instructions stored thereon, which, when executed by a computer (e.g., a processor in a computer), implement any of the above-mentioned methods for billing air conditioning energy consumption in an office building with centralized supply of cold and heat sources.

[0053] In summary, the present invention provides a method and device for billing air conditioning energy consumption in an office building with centralized supply of cold and heat sources, the method comprising: obtaining a user area, the user area including the room area and public area corresponding to the user; collecting the output energy consumption of all air conditioning terminals in the user area; accumulating the real-time energy consumption of all air conditioning terminals in the user area within a period, and calculating the air conditioning energy consumption fee of the user according to a preset billing method. The technical solution of the present application realizes scientific and reasonable billing of air conditioning energy consumption by collecting air conditioning system operation data, systematically analyzing equipment relationships, accurately associating spatial areas, and establishing a detailed billing rule library. Improve the fairness and accuracy of billing, avoid situations where users have to bear costs without using them; reduce initial equipment investment and maintenance costs, simplify system installation and management; improve asset operation and maintenance efficiency and user satisfaction, and promote the intelligent development of property management.

[0054] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention can be realized and obtained by the structures particularly pointed out in the written description, claims, and drawings.

[0055] The technical solution of the present invention is further described in detail below through the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0056] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0057] Figure 1 A flow chart of a method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0058] Figure 2 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0059] Figure 3A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0060] Figure 4 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0061] Figure 5 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0062] Figure 6 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0063] Figure 7 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0064] Figure 8 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0065] Fig. 9 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0066] Fig.10 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0067] Fig.11 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0068] Fig.12 A flow chart of another method for charging air conditioning energy consumption in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0069] Fig.13 A structural diagram of an air conditioning energy consumption billing device in an office building with centralized cold and heat sources provided by an embodiment of the present invention;

[0070] Fig.14 A structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0071] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In order to make the purpose, technical solutions and advantages of the present application clearer, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only intended to explain the present application, rather than to limit the present application. For those skilled in the art, the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating the examples of the present application.

[0072] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "include..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0073] like Figure 1 As shown, the present invention provides a method for charging air conditioning energy consumption in an office building with centralized cold and heat sources. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources includes:

[0074] In step S11, a user area is obtained, where the user area includes a room area and a public area corresponding to the user;

[0075] In step S12, the output energy consumption of all air-conditioning terminals in the user area is collected;

[0076] In step S13, the real-time energy consumption of all air-conditioning terminals in the user area within the period is accumulated, and the air-conditioning energy consumption fee of the user is calculated according to a preset billing method.

[0077] In one embodiment, through scientific and reasonable data collection and analysis, fair and accurate air conditioning energy consumption cost sharing is achieved, energy management efficiency is improved, and energy waste is reduced. Identify and divide user areas, including room areas and public areas corresponding to each user. Collect energy consumption data of all air conditioning terminals in the user area in real time. Accumulate and analyze the collected energy consumption data, and calculate the air conditioning energy consumption cost of each user according to the preset billing rules. Provide a platform for owners and users to query energy consumption and costs, and support system configuration and maintenance.

[0078] The correspondence between room areas and public areas is that each public area corresponds to at least one room area, and each room area corresponds to at least one air conditioning terminal. The correspondence between users and room areas is that each user corresponds to at least one room area, and one user can correspond to multiple room areas. The user area includes all room areas corresponding to the user, and the public areas corresponding to these room areas.

[0079] The operation data of the air conditioning terminals in each area is obtained in real time through the building automation system (BA) and data monitoring terminal, and the data is stored in the real-time database. According to the prior configuration information and the information of the user area, all the terminal air conditioners corresponding to each user are analyzed and identified.

[0080] The air conditioning energy consumption billing method commonly used in the prior art has many shortcomings. The technical solution in this embodiment provides an office building air conditioning energy consumption billing model, which is particularly suitable for high-end office buildings that use variable air volume (VAV) air conditioning systems with centralized cold and heat sources. The model improves and collects key operating data of the air conditioning system, including the total cooling / heating capacity of the cold and heat source stations, the operating status and power of each equipment system, the operating data of the air handling units on the floor, the status parameters of the air supply terminals, and the operating parameters of the thermostats in each room, to ensure the comprehensive coverage and accurate collection of all necessary data. If the existing system lacks relevant data, it needs to be supplemented by installing sensors or restoring communications.

[0081] After data collection is completed, the system conducts an in-depth analysis of the entire cold and heat source system and the air supply system, and establishes a fixed association between the AHU (Air Handling Unit) / MAU (Makeup Air Unit) and the FCU (Fan Coil Unit) on each floor or in each area. This fixed association is maintained through the database, and the key parameter limits are configured according to the equipment nameplate parameters to ensure the availability and accuracy of the collected data. Subsequently, each user area is associated with the public area to form a many-to-one mapping relationship to ensure that the air conditioning usage of each user can accurately reflect its actual usage in the exclusive area and shared public area. In this way, the user's energy consumption not only includes the use of his exclusive room area, but also covers the energy consumption allocation of the public area he uses, ensuring the fairness and accuracy of the billing. A detailed billing rule library is established to calculate the air supply heat and cold of each air conditioning terminal in each period according to different usage periods and cold and heat calculation rules, and perform energy consumption accumulation and allocation settlement within a billing cycle. Owners and asset managers can view the air conditioning energy consumption and final billing value of each user through the platform account, and export the corresponding energy bill; resident users can view their own air conditioning energy consumption and expenses through their personal accounts. In addition, the system configuration module allows the administrator account to enter energy usage and maintain user information during the billing cycle, such as the replacement of resident companies, room re-planning, and equipment parameter updates, to ensure the dynamic adaptability and efficient operation of the system. Through this model, scientific and reasonable billing of centralized variable air volume air conditioning systems in office buildings is achieved, energy management efficiency is improved, and energy waste is reduced, which has significant practical value and promotion prospects.

[0082] The technical solution in this embodiment provides an office building air conditioning energy consumption billing model, which is particularly suitable for office buildings that use variable air volume air conditioning with centralized cold and heat sources. Through comprehensive identification of the project air conditioners, we first determine the key data that need to be collected and obtained. These data are divided into five categories: First, statistical data in air conditioners, including the cooling capacity and heating capacity of cold and heat sources, power consumption of cooling / heating rooms, steam consumption, and power consumption of fresh air fans; second, operating data of air conditioning equipment, such as the on / off status of the equipment, supply air temperature, return air temperature, fan frequency, ambient temperature and humidity, water valve status, supply air flow, fan speed gear, supply water temperature, return water temperature, and chilled water flow; third, inherent parameters of the equipment, including the rated cooling capacity / heating capacity of the host, the rated air volume of the fan, and the power parameters of various equipment (such as the host, pump, cooling tower, supply fan, fresh air fan, and fan coil unit); fourth, location information of users and equipment in the building, covering the name of the user, time of arrival, time of departure, area of ​​use, room number, equipment number and its specific location, as well as information on public areas; fifth, energy unit price information, such as electricity unit price, steam unit price, and natural gas price at different times. If there is a lack of relevant data, it is necessary to supplement it by installing sensors or restoring communication functions to ensure that all key parameters can be monitored in real time and accurately collected. After the data collection is completed, the entire cold and heat source and air supply are deeply analyzed, and a fixed association relationship between the air handling unit (AHU / MAU) and the fan coil unit (FCU) on each floor or in the area is established. This process is maintained by the database to ensure the accuracy and stability of the equipment association. According to the nameplate parameters of the equipment, the limit values ​​of key parameters (such as maximum air volume, temperature difference, etc.) are configured for availability identification and data quality control of subsequent data collection. At the same time, the equipment parameters and association relationships are dynamically updated to adapt to changes after equipment replacement or modification to ensure the accuracy and real-time nature of energy consumption data. Subsequently, each user area is associated with the public area to form a many-to-one mapping relationship to ensure the accuracy of energy consumption allocation. The user area includes all room areas corresponding to the user and the public areas corresponding to these room areas. In this way, the user's total energy consumption not only covers the use of his exclusive room area, but also includes his energy consumption allocation in the public area. This association process is managed through the database, combined with the dynamic changes of users in the building, to ensure the flexibility and accuracy of energy consumption sharing. It can automatically adjust the association between users and used spaces to adapt to changes such as user entry, vacancy and room re-planning, ensuring fairness and accuracy of billing. Figure 2As shown in the figure, a detailed billing rule library is established. According to different usage periods and cold and heat calculation rules, the air supply cold and heat of each air-conditioning terminal is calculated period by period, and energy consumption is accumulated and allocated within a billing cycle. Owners and asset managers can view the air conditioning energy consumption and final billing value of each user through the platform account, and export the corresponding energy bill. Resident users can view their own air conditioning energy consumption and the expenses incurred through their personal accounts to enhance transparency and user trust. The configuration module allows the administrator account to enter energy usage and maintain user information within the billing cycle, such as replacement of resident enterprises, re-planning of rooms, and update of equipment parameters, etc., to ensure dynamic adaptability and efficient operation.

[0083] In the relational database, the cold and heat sources are associated with the buildings they supply, and the equipment involved in the operation energy consumption (such as the cold and heat source host, refrigeration pump, cooling pump, hot water pump and cooling tower, etc.) is associated with the corresponding building equipment. This configuration ensures that the energy consumption data of the cold and heat sources can be accurately mapped to the specific building equipment, which is convenient for subsequent energy consumption monitoring and billing analysis. According to the unit of a single building, the equipment information in the building (such as secondary pumps, fresh air fans and other equipment shared by the entire building) is associated with the corresponding building. This configuration method ensures that the energy consumption data of equipment at the building level can be centrally managed and analyzed, and improves the efficiency and accuracy of data processing. In the relational database, the information of each floor is configured according to the building, including the usage attributes of each floor (such as office floor, conference floor, restaurant floor, etc.) and its daily working hours. At the same time, the equipment exclusive to each floor (such as the air handling unit AHU in the air conditioning room) is associated with the corresponding floor. For each floor, the information of the user room and the public area is set separately. The user room configuration includes user information such as user name, entry / exit time, room area, etc., allowing one user to associate with multiple rooms. At the same time, configure the air supply terminal information (such as VAVbox or FCU) and associate it with the upper-level AHU and the corresponding room information, allowing multiple air supply terminals to correspond to one upper-level device or room. For the public areas of the office floor (such as corridors, rest areas, small meeting rooms, toilets, etc.), the association of air supply terminals is also configured, but without binding specific user information. The equipment configuration method is the same as that of the user's room, ensuring that the energy consumption in the public area can be accurately apportioned and billed according to the corresponding equipment usage. Figure 3As shown. Through the configuration of the above relational database, it is possible to manage and associate the relationships between users, buildings and equipment in office buildings, realize accurate energy consumption monitoring and reasonable cost sharing, which not only improves the accuracy of energy consumption data and management efficiency, but also provides a solid data foundation for subsequent energy consumption analysis and optimization, and has significant practical value and promotion prospects. It effectively reflects the complex relationship between users, buildings and equipment in office buildings, and realizes scientific and reasonable energy consumption billing of centralized variable air volume air conditioners through the association of cold and heat sources with building equipment, the management of building and floor equipment information, and the detailed settings of user rooms and public areas.

[0084] Using the building automation system and data monitoring terminal, the operation data of the air conditioning terminal is obtained in real time, including parameters such as cooling capacity, heating capacity, air volume, temperature, etc. The collected data is stored in the database in real time for subsequent energy consumption calculation and analysis. According to the prior configuration information and the division of user areas, all terminal air conditioners corresponding to each user are determined. After completing the identification of the user area and the collection of energy consumption data, the real-time energy consumption data of all air conditioning terminals within the period (such as a billing period) is accumulated, including the accumulation of energy consumption of each terminal in different time periods to form the total energy consumption data of each user. According to different air conditioning system types, such as VAV (Variable Air Volume), FCU (Fan Coil Unit), AHU, set the corresponding energy consumption calculation rules.

[0085] VAV and FCU methods: Calculate the cooling and heating capacity of the supply air by taking the supply air temperature, return air temperature, water valve status in the real-time air volume and other parameters. The calculation formula is as follows:

[0086] Q i =εV i ΔT i / 3600

[0087] Among them, ΔTi is the real-time difference between the supply air temperature and the room temperature, Vi is the real-time operating air volume, Qi is the real-time supply air cooling and heating capacity, and ε is the cooling and heating calculation coefficient.

[0088] AHU method: Calculate the cooling and heating capacity of the supply air through parameters such as supply air temperature and humidity, fresh air valve opening, fresh air temperature and humidity, return air temperature and humidity, blower frequency or air volume, water valve switch status and supply air status. The specific formula is as follows:

[0089] q i =0.1ρ a V i |h im -h is |

[0090] Among them, ρ is the variable air density (1.2 for cooling conditions and 1.1 for heating conditions), V is the real-time air flow, H_m is the enthalpy value of the new return air after mixing at time i, and H_s is the air supply enthalpy value at time i. If there is no direct data collection equipment, it can be calculated by the fan frequency f and the rated air volume C:

[0091] Vi=f / 50*C

[0092] The calculation formula for the enthalpy value of the new return air after mixing is:

[0093] hm=К·hr+(1-К)·hn

[0094] Among them, H_s is the supply air enthalpy value, H_n is the fresh air enthalpy value, H_r is the return air temperature and humidity enthalpy value, and K is the fresh air valve opening percentage.

[0095] VAV has a parent node, the upper device AHU, which only needs to condition the air volume through the air valve; while FCU is an independent air supply device, the fan provides power, and the circulating chilled water cools the return air. The fan speed can be changed by the motor to make the air volume divided into three gears: high, medium and low. The fan gear state is collected to convert the air volume. Since the rated air volume information of each FCU has been configured, the air volume can be calculated according to the gear. When the water valve feedback state is 0, the FCU cooling capacity is not calculated. VAV proportion analysis is to analyze the VAV proportion of each room on the same floor, and calculate the VAV proportion of a user in combination with all the rooms owned by a user on the floor. The room area energy consumption is to calculate the energy consumption of the user's room area based on the supply air cooling and heating capacity of the parent node AHU and the user's VAV proportion, as well as the energy consumption of the FCU in all the user's rooms. The first public ratio is the ratio of the net total energy consumption of the public area to the sum of the energy consumption of each room on the floor calculated based on the total energy consumption of each room on the floor and the total energy consumption of VAV and FCU, and is determined as the first public ratio. The user's shared area energy consumption is the room area energy consumption multiplied by the first shared area ratio. The second shared area ratio is to obtain the gross total energy consumption and the net total energy consumption of the floor, and calculate the second shared area ratio. The user's system shared area energy consumption is the room area energy consumption multiplied by the second shared area ratio. The total energy consumption is calculated as the user's total energy consumption, which is the sum of the room area energy consumption, shared area energy consumption, and system shared area energy consumption.

[0096] The first public use area is to calculate the energy consumption of the user in the first public use area based on the ratio of the area of ​​the user's room to the area of ​​all rooms in the building. The second public use area is to calculate the energy consumption of the user in the second public use area by counting the energy consumption during the time the user uses the second public use area. Overtime energy consumption is to mark all rooms on a certain floor as overtime rooms and perform corresponding energy consumption calculations. Room settlement deviation energy consumption is to calculate the room settlement deviation energy consumption based on the deviation value between the bill usage and the collected usage, and the ratio of the user's room energy consumption to the energy consumption of all rooms. The calculated settlement deviation energy consumption is to calculate the user's calculated settlement deviation energy consumption based on the deviation value between the total cooling and heating data in the period and the cumulative value collected daily, and the ratio of the user's room energy consumption to the energy consumption of all rooms.

[0097] Background: A high-end office building uses a variable air volume (VAV) air conditioning system with centralized cold and heat sources. There are 10 floors in the building, and each floor has several office areas and public areas. It is now necessary to accurately bill the air conditioning energy consumption of each resident user. The process of obtaining the user area includes multiple levels of association and mapping to ensure that the air conditioning energy consumption of each user can be accurately identified and apportioned. The correspondence between the room area and the public area, each public area corresponds to at least one room area, and vice versa. For example, the public corridor of a certain floor corresponds to several office room areas. Each user corresponds to at least one room area, and one user can correspond to multiple room areas. Through this many-to-one mapping relationship, the air conditioning energy consumption data of each user can be accurately associated with its corresponding air conditioning terminal. The user area includes not only all the room areas corresponding to the user, but also the public areas corresponding to these room areas. For example, user A has 5 room areas on a certain floor, corresponding to 2 public areas, and the energy consumption of these public areas will be apportioned to user A in proportion. The collection of energy consumption data is a key step of the present invention. Through real-time data monitoring and collection, the accuracy of energy consumption calculation is ensured. Using the building automation system (BA system) and data monitoring terminal, the operating data of the air-conditioning terminal is collected in real time, including the supply air temperature, return air temperature, real-time air volume, water valve status, etc. The terminal association analysis analyzes and identifies all the air-conditioning terminals corresponding to each user based on the prior configuration information and the division of user areas. For example, all the air-conditioning terminals of user A in the room area corresponding to the user A are identified through the correspondence between users and terminals pre-configured in the database. Energy consumption accumulation and billing calculation are the core parts of the present invention, involving multiple billing methods and energy consumption sharing rules. The VAV proportion of each room on the same floor is analyzed, and the VAV proportion of the user is calculated in combination with the distribution of users in all rooms on the floor. The energy consumption of the user's room area is calculated based on the supply air cooling and heating capacity of the parent node AHU and the user's VAV proportion, as well as the energy consumption of the FCU in all the user's rooms. The ratio of the sum of the energy consumption of each room on the floor to the total energy consumption of VAV and FCU is calculated and determined as the first shared ratio.

[0098] Energy consumption of user common area = energy consumption of room area × first common area ratio.

[0099] Calculate the ratio of the gross total energy consumption to the net total energy consumption of the floor and determine it as the second common area ratio.

[0100] User system shared energy consumption = room area energy consumption × second shared ratio.

[0101] The total energy consumption is calculated as

[0102] Total energy consumption of users = energy consumption of room area + energy consumption of common area + energy consumption of system common area.

[0103] The energy consumption of the user in the first public use area is calculated based on the ratio of the area of ​​the user's room to the area of ​​all rooms in the building. The energy consumption of the user in the second public use area is calculated by counting the energy consumption during the time the user uses the second public use area. Overtime energy consumption is to mark all rooms on a certain floor as overtime rooms, and perform corresponding energy consumption calculations to ensure that the energy consumption during overtime can be accurately allocated to users. The room settlement deviation energy consumption is calculated based on the deviation between the bill usage and the actual collected usage, combined with the ratio of the user's room energy consumption to the energy consumption of all rooms. The calculated settlement deviation energy consumption is calculated based on the deviation between the total cooling and heating data in the period and the daily accumulated value, combined with the ratio of the user's room energy consumption to the energy consumption of all rooms.

[0104] Determine the correspondence between the room areas and public areas on each floor. For example, if there are 20 room areas on each floor, there are 2 public areas. Associate each resident user with the corresponding room area, such as user A corresponds to 5 room areas, and user B corresponds to 3 room areas. Collect the operating data of each air-conditioning terminal in real time through the BA system, including supply air temperature, return air temperature, real-time air volume, water valve status, etc. Store the data in a real-time database to ensure the real-time and accuracy of the data. Calculate the supply air cooling and heating capacity of user A in each room area. Calculate the first public area ratio and the second public area ratio, and allocate the energy consumption of the public area and the system public area according to the user's VAV ratio and the system public area ratio. The total energy consumption is calculated as the total energy consumption of user A = room area energy consumption + public area energy consumption + system public area energy consumption.

[0105] According to the preset billing rules, the total energy consumption of user A is calculated and a bill is generated. Owners and users use the platform account to query their respective energy consumption and costs and export bills. The asset manager uses the administrator account to maintain the system configuration, such as updating user information and adjusting the billing cycle.

[0106] In a certain business center building, the centralized cold and heat source supply system uses AHU to provide cooling and heating. There are multiple temporary use areas and conference rooms in the building, and the energy consumption of these public areas needs to be reasonably allocated. Determine the correspondence between temporary use areas and conference rooms. Each public area corresponds to at least one temporary use area. Associate the user's office area with its corresponding temporary use area to ensure the accuracy of energy consumption allocation. Collect the energy consumption data of the conference room in real time through the BA system and data monitoring terminal, including parameters such as supply air temperature and humidity, and fresh air valve opening. AHU calculation is to calculate the supply air cooling and heating capacity of the conference room based on parameters such as supply air temperature and humidity and fresh air valve opening. Shared energy consumption is to calculate the energy consumption of the first public use area and the second public use area based on the use time of the conference room. Overtime energy consumption processing is to mark the relevant room as an overtime room if there is overtime on a certain floor during a specific period of time, and calculate the energy consumption during the overtime period. Settlement deviation processing is to adjust the user's settlement energy consumption based on the deviation between the bill usage and the actual collected usage to ensure the accuracy of billing. Based on the calculated total energy consumption, the user's air conditioning fee bill is generated according to the preset billing rules. Owners and users can view their respective energy consumption and fees through the platform and export detailed bills. Administrators can update user information and adjust billing rules through the system configuration module to maintain the flexibility and accuracy of the system.

[0107] 1. Calculation steps and rules for daily working hours:

[0108] (I) Energy consumption calculation

[0109] (1) Start collecting data at the hourly moment, calculate the VAV energy consumption Qiv and the energy consumption proportion ξ1 and FCU energy consumption Qif under the same parent node at each moment, and archive the data; for example, if there are 8 VAVs under an AHU on the 8th floor, namely VAV8-1 to VAV8-8, then the proportion of VAV8-1 is:

[0110] ξ1=Qi-VAV8-1 / (Qi-VAV8-1+Qi-VAV8-2+……+Qi-VAV8-8)

[0111] (2) Calculate the air supply cooling and heating value qi of the parent node AHU at the same time and archive the data;

[0112] (3) Combine the proportion ξ1 value of each VAV in each user room on each floor and the energy consumption Qif of each FCU. The cooling and heating consumption of the user room is: Σξ1·qi+ΣQif. The calculation results are archived.

[0113] (4) Allocation of air conditioning energy consumption in public areas of each floor,

[0114] Calculate the energy consumption proportion of each room on the floor ξ2, which is used to calculate the shared air conditioning energy consumption in the public area of ​​the floor. The calculation rule is: ξ2 = (the sum of all VAV energy consumption in the room at a certain moment + the sum of all FCU energy consumption in the room) / (the sum of all VAV energy consumption of all users on the floor + the sum of all FCU energy consumption in the user's room)

[0115] The public area on the floor can be regarded as a special room. The calculation formula of air conditioning energy consumption Qp is the same as that of the user room. The air conditioning energy consumption shared by the room is: ξ2·Qp;

[0116] (5) The computing energy consumption during a collection cycle (5 min) during daily working hours is: Σ(ξ1·qi+Qif)+ξ2·Qp

[0117] (6) The calculation results are presented in hours. The sum of the collected calculation results within the same hour (12 collections) is taken as the user's energy consumption during the calculation time. The energy consumption calculation process during daily working hours is as shown in the attached figure. Figure 5 shown.

[0118] (II) Calculation and allocation of energy consumption of measurement deviation

[0119] The above calculation is made from the perspective of the wind system. Since the calculation is an instantaneous value, it has a certain deviation from the continuous operation status. At the same time, considering the loss in the transmission and heat exchange process of chilled water, the calculation from the perspective of the water system can better reflect the air conditioning energy consumption of the entire system. The specific calculation method is as follows:

[0120] (1) Collect the system's heat and cold data for one hour during daily working hours, such as from 9 to 10 o'clock, and calculate the energy value Qw through the energy meter. If there is no direct collection of heat and cold data, the system's chilled water flow and temperature difference can also be calculated in real time, and the calculated value in one hour can be obtained according to the heat calculation formula;

[0121] (2) Sum up the qi values ​​of each AHU / MAU in the system and the Qi f of the FCU during the period to obtain the total energy consumption of the wind system during that hour;

[0122] (3) Qw-(Σq i+ΣQi), is the cold and heat quantity of the measurement deviation, which can be positive or negative;

[0123] (4) Calculate the deviation correction coefficient ξ3 for each room within the hour, ξ3 = (the sum of all VAV energy consumption in the room within the hour + the sum of all FCU energy consumption in the room) / (the sum of all VAV energy consumption of all users in the system + the sum of all FCU energy consumption in the user's room), all users in the system refer to all users who need to share the settlement, excluding the substitution of any public area energy consumption;

[0124] (5) The deviation energy consumption of each room per hour is: ΔQ1=[Qw-(Σq i+ΣQif)]·ξ3

[0125] The calculation process of system deviation energy consumption is shown in the attached figure. Figure 6 shown.

[0126] (III) Energy consumption settlement in public areas of buildings

[0127] The public areas of a building include functional areas such as the lobby, conference room and restaurant. These areas are generally supplied by independent air supply systems. The calculation is carried out according to Formula 1 and Formula 2. The respective allocation calculation logic is as follows:

[0128] (1) For common areas such as lobbies and restaurants, energy consumption is apportioned according to the usage area ratio of each user:

[0129] ξ4 = area of ​​all rooms of the user / area of ​​all rooms in the building. This parameter is automatically calculated based on the relationship database data.

[0130] Q2=ξ4·Calculate regional air conditioning energy consumption

[0131] The calculation result is also based on hours, which is consistent with the previous time, and is obtained by summing the values ​​at each collection time;

[0132] (2) For temporary use areas such as conference rooms, the energy consumption is calculated according to the principle of "who uses, who pays". The heating and cooling consumption is incorporated into the user's air conditioning fee for the day. The calculation is also carried out according to Formula 1 and Formula 2. The energy consumption is calculated as Q 1 , the statistical period is the same as above. Air conditioning energy consumption settlement during daily working hours: the above: As the air conditioning energy consumption during daily working hours. The apportionment and settlement process for public areas of buildings is as follows Figure 7 shown.

[0133] 2. Calculation of energy consumption during overtime

[0134] The energy consumption of overtime work in office buildings is allocated and settled according to the principle of "who uses, who pays" and the actual expenses incurred. The calculation method is as follows:

[0135] (I) Energy consumption calculation

[0136] (1) Count the overtime rooms in each time period, summarize the user rooms in each time period, apply for overtime in advance on the hour and half hour, and close the end use at the appointed time;

[0137] (2) Find the convention time for the same room usage as the time span for settlement. For example, if there are 5 users working overtime from 18:00 to 19:00, 3 users working overtime from 19:00 to 19:30, 1 user working overtime from 19:30 to 20:00, and no user working overtime after 20:00, then statistical settlement is performed once from 18:00 to 19:00, 19:00 to 19:30, and 19:30 to 20:00. Similarly, a calculation is performed once at each collection moment, and the calculation method is the same as 1-1, and ξ1 and Qif are calculated for each time period;

[0138] (3) Calculate the cooling and heating value qi of the AHU to which the overtime room belongs, using the same calculation as 1-2, and summarize the calculated values ​​for each period;

[0139] (4) Combine the cold and heat of the overtime room, Σξ1·qi+ΣQif, and calculate the same as 1-3, and calculate Qp in the same way;

[0140] (5) Calculation of apportionment in public areas on each floor: Calculate the energy consumption ratio ξ2 of each room during each overtime statistical period. The calculation rules refer to 1-4, and different periods are calculated as ratios ξ2-1, ξ2-2, and ξ2-3 respectively;

[0141] (6) The energy consumption of overtime rooms in each period is ξ2-1·Qp, ξ2-2·Qp, ξ2-3·Qp;

[0142] (7) The energy consumption of the overtime room during the statistical period is calculated as Q3 = Σξ1·qi+ΣQif+ξ2-i·Qp, which is used as the air conditioning air supply energy consumption during this period. The energy consumption calculation process for the overtime period is as shown in the attached figure. Figure 8 shown.

[0143] (II) Calculation and allocation of energy consumption of measurement deviation

[0144] (1) The calculation of energy consumption with metering deviation is the same as that of daily periods, except that the collection period is different. The data of cooling and heating are collected or calculated in each overtime statistical period to obtain the period values ​​Qw-1, Qw-2, and Qw-3;

[0145] (2) Sum up the qi values ​​of each AHU / MAU in the system and the Qif of the FCU in each time period to obtain the total energy consumption value of the wind system in that period;

[0146] (3) Qw-i-(Σq i+ΣQif), is the heat and cold amount of the measurement deviation in each period, which can be positive or negative;

[0147] (4) Calculate the deviation correction coefficient ξ3 for each room during the statistical period, using the same calculation method as the working period;

[0148] (5) The deviation energy consumption of each room during the statistical period is: ΔQ3i=[Qw-i-(Σq i+ΣQi)]·ξ3

[0149] The air conditioning energy consumption during the user's overtime period is Q3+ΔQ3i. The air conditioning energy consumption during the overtime period can be obtained by summing up the energy consumption of the rooms involved in overtime in each period.

[0150] During overtime, the air conditioners in the public areas of the building are generally not turned on. If there is a conference room in use, it is calculated as a separate overtime room, and its energy consumption and metering deviation energy consumption are calculated, and finally allocated to the user during the final settlement. The overtime metering deviation energy consumption allocation process is as follows Fig. 9 shown.

[0151] Step 4. Calculation of monthly settlement difference allocation

[0152] The air conditioning energy consumption of users in office buildings is settled on a monthly basis. There are two sources of cold and heat sources: one is chilled water or steam purchased from outside; the other is chilled water and hot water provided by chillers, heat pumps and boilers. When performing monthly air conditioning energy consumption settlement, there will be system losses or measurement deviations, and the allocation of this difference needs to be reflected in the user settlement. The calculation process for the allocation of the difference between the two types of cold and heat sources is as follows:

[0153] (I) Purchase of cold and hot sources

[0154] (1) Compare the usage of the cold and hot sources in the monthly bill with the usage of the installed and collected cold and hot sources. Generally, the purchased amount will be greater than the collected value. Calculate the difference ΔE;

[0155] (2) Based on the monthly total calculated energy consumption of each user's room during working hours and overtime hours, calculate its share of energy consumption in all rooms ξ5 = (Q1 + Q2 + Q3) / (ΣQ1 + ΣQ2 + ΣQ3)4-1

[0156] (3) The energy consumption of the room settlement deviation is allocated to Q4 = ΔE·ξ5, and the results are archived and recorded. The monthly calculation difference allocation process for the purchased cold and heat source system is as follows Fig.10 shown.

[0157] (ii) Own cold and heat sources

[0158] The monthly deviation of the company's own cold and heat sources is due to the fact that the operating time of the cold and heat source systems is inconsistent with the user's statistical collection time. Although a summary calculation is performed once a day, there are cumulative errors. This error impact is eliminated in the monthly settlement.

[0159] (1) Obtain the total cooling and heating data of the monthly settlement period through the energy collection device, and compare it with the cumulative value collected every day of the month to obtain the difference ΔE';

[0160] (2) Calculate the monthly energy consumption ratio of each room ξ5, using the same formula as 4-1;

[0161] (3) Calculate the energy consumption deviation Q4', Q4' = ΔE'·ξ5

[0162] The calculation process for owned cooling and heating sources is the same as that for purchased energy, except that the data source for the monthly usage is different.

[0163] Step 5. Air conditioning energy consumption cost allocation

[0164] The main energy costs of air conditioning systems include the following:

[0165] ① Buildings with purchased cold and heat sources: costs of purchased cold and heat sources, electricity costs for air supply systems, and electricity costs for water pump operation;

[0166] ② Buildings with their own cold and heat sources: electricity and natural gas fees for main unit operation, electricity fees for water pumps and cooling towers, and electricity fees for air supply systems.

[0167] General industrial and commercial users can choose peak and valley electricity prices, but the cost of purchased energy also fluctuates in each settlement period, and the difference in the number of users leads to differences in energy costs, so it is necessary to calculate the energy consumption costs caused by the use of air conditioning by time.

[0168] (1) Settlement of the cost of purchased cold and heat sources: Calculate the monthly consumption based on the daily consumption of the room Q1+ΔQ1+Q2+Q3+ΔQ3i and the monthly energy consumption difference Q4 value. Calculate the cost of the cold and heat sources for the room based on the unit price of cold and hot energy;

[0169] (2) Electricity costs for the air supply system mainly include the power consumption of AHU / MAU and fresh air fan, which are collected and measured by independent electricity meters. The FCU has a smaller power and generally does not have an independent meter. In practice, it can be converted according to operating time and power.

[0170] The power consumption of AHU / MAU is allocated to the lower-level equipment, and the operating power is generated once every hour. The electricity fee Cf is calculated according to the time-of-use electricity price. The allocated electricity fee of each VAV is calculated based on ξ1·Cf in each time period. The VAV allocation data in the same room are summarized and then combined to calculate the daily electricity fee.

[0171] (3) Water pump electricity charges mainly include the electricity charges generated by the operation of various water pumps for air conditioning and hot and cold water, and are shared by all users in the system.

[0172] During daily working hours: the power consumption of the water pump is collected and measured on an hourly basis, and the electricity charge Cp is calculated based on the time-of-use electricity price.

[0173] According to the ξ3·Cp of the room in each period, the power consumption of the water pump in the room during daily period is obtained;

[0174] Overtime period: Measure the power consumption of the water pump according to each overtime statistical period, and calculate the electricity charge Cp' according to the time-of-use electricity price

[0175] According to the ξ2-i of the room in the statistical period, calculate the overtime electricity charge ξ2-i·Cp' in the period,

[0176] Summarize the daily and overtime hours to get the electricity cost of the water pump in the room on that day

[0177] (4) Cooling tower electricity fee, the settlement method is the same as the water pump electricity fee;

[0178] (5) Costs of self-owned cooling and heating sources, which are divided into two types: electrical equipment and gas equipment.

[0179] Electrical equipment: If there is a time-of-use electricity price, the same method as the water pump electricity fee is used for settlement; if there is a single electricity price, the monthly electricity fee of the equipment is C, then ξ5·C, and the monthly host operation fee is calculated;

[0180] Gas-using equipment: The calculation method is the same as that of purchasing cold and heat sources. The purchase fee is the gas fee generated by monthly metering. The unit price of cold and hot energy is calculated based on the monthly total metered energy consumption, and the room air conditioning fee is calculated based on the monthly total energy consumption. The cost settlement and allocation process is as follows Fig.11 shown.

[0181] The energy cost for buildings with purchased cooling and heating sources is (1)+(2)+(3); the energy cost for buildings with self-owned cooling and heating sources is (2)+(3)+(4)+(5).

[0182] Step 6. Monthly billing

[0183] The bills are ultimately summarized by users within the building and serve as the basis for charging air conditioning fees.

[0184] According to the corresponding relationship between rooms and users, the cooling, heating and air conditioning costs of each user's room are summarized. Here, two special cases are considered: one is that users may leave and enter the same room within a month, and they are settled separately in the calculation logic, so they are listed separately here; the other is that some temporary use rooms, such as lecture halls, may be used by users in the building or by external customers, and a distinction must be made in the bill. The process of monthly settlement bills is as follows Fig.12 shown.

[0185] The system devices used in the present invention include an air conditioning energy meter, or a flow meter and a supply and return water temperature meter that can achieve equivalent functions, which measure the total energy consumption of the system; a smart meter, which measures the power consumption of the air conditioning system equipment (host, pump, AHU / MAU fan, cooling tower), a data gateway, which is used to transmit the required data, and a workstation computer, which is used to store data files for user use and query.

[0186] The present invention realizes accurate billing of air conditioning energy consumption in office buildings with centralized cold and heat sources through a scientific and reasonable method, and has the following beneficial effects: improving the fairness and accuracy of billing, through accurate data collection and analysis, avoiding users from having to bear the cost when they do not actually use the air conditioner, and ensuring the fairness of billing. Reasonable allocation of shared energy consumption ensures that the energy consumption of public areas and systems can be accurately allocated to each user. Reduce the initial investment and maintenance costs of equipment, and reduce the dependence on expensive equipment such as flow meters by optimizing the data collection method, thereby reducing the initial investment cost. Simplify system installation and management, and improve the economy and maintainability of the system. Optimize energy management, reduce energy waste, and avoid energy waste caused by users lowering the temperature in summer or raising the temperature in winter through real-time monitoring and precise control, so as to achieve energy conservation and emission reduction. Overtime energy consumption and settlement deviation processing ensure that the energy consumption data of the system is consistent with the actual usage, and further reduce energy waste. Enhance the flexibility and scalability of the system, support multiple billing methods and complex energy consumption allocation rules, and adapt to changes in different office environments and user needs. Improve asset operation and maintenance efficiency and user satisfaction, reduce manual intervention and improve operation and maintenance efficiency through automated data collection and analysis. Provide user-friendly query and billing functions to improve user transparency and satisfaction with energy consumption management.

[0187] The present invention provides a method for billing air conditioning energy consumption in office buildings with centralized cold and heat sources. Through systematic data collection, energy consumption analysis and public sharing, scientific and reasonable billing of air conditioning energy consumption costs is achieved. The energy consumption of public areas, system power consumption, heat exchange and transmission loss energy consumption are shared according to the energy consumption ratio of each terminal. The air conditioning users in each area are different. The public energy consumption and losses in each sub-area are borne by the users in that area, and the public losses generated by the entire system are borne by all users in the system. The building and equipment are deconstructed. The building deconstruction path is: project -> building -> floor -> area -> room -> user. The equipment deconstruction path is: cold and heat source room (heat exchange room) -> AHU / MAU -> air supply terminal. The air supply terminal is associated with the room, so that the building information, user information and air conditioning equipment are associated. When user information changes, it can be decoupled from the terminal device or the room, which is convenient for configuration. The system temperature and air volume parameters are set in the normal value range according to the rated value and the characteristics of building use. When the collected data exceeds the limit, an alarm is generated to remind the user to pay attention to data abnormalities. If the user confirms that the data is abnormal, the data is replaced according to the historical average of the measurement point. For example, if the fan air volume exceeds the theoretical maximum value, if the motor frequency is normal, the air volume is replaced according to the average value under the historical frequency. If the motor frequency is also abnormal, it is replaced according to the average value in the recent operating time, and the replaced data is used for calculation, which reduces the impact of data abnormalities on the overall calculation. It not only improves the fairness and accuracy of billing, reduces the initial investment and maintenance costs of the system, but also optimizes energy management and reduces energy waste. It has broad application prospects and significant economic benefits.

[0188] In one embodiment, Fig.13 The following is a block diagram of an air conditioning energy consumption billing device in an office building with centralized cold and heat sources according to an exemplary embodiment. Fig.13 As shown, the air conditioning energy consumption billing device in the office building with centralized cold and heat sources includes an acquisition module 131, a collection module 132 and a calculation module 133.

[0189] The acquisition module 131 is used to acquire a user area, where the user area includes a room area and a public area corresponding to the user;

[0190] The collection module 132 is used to collect the output energy consumption of all air-conditioning terminals in the user area;

[0191] The calculation module 133 is used to accumulate the real-time energy consumption of all air-conditioning terminals in the user area within a period, and calculate the air-conditioning energy consumption fee of the user according to a preset billing method.

[0192] The acquisition module 131, the collection module 132 and the calculation module 133 included in the block diagram of the air conditioning energy consumption billing device in an office building with centralized supply of cold and heat sources are controlled to execute the air conditioning energy consumption billing method in an office building with centralized supply of cold and heat sources described in any of the above embodiments.

[0193] like Fig.14 As shown, the present invention provides an electronic device 1400, the electronic device comprising: a communication interface, a processor 1401, and a memory 1402;

[0194] Among them, the memory 1402 is used to store program instructions, and when the program instructions are executed by the processor 1401 that is communicatively connected to the memory 1402 through the communication interface, the user area is obtained, and the user area includes the room area and public area corresponding to the user; the output energy consumption of all air-conditioning terminals in the user area is collected; the real-time energy consumption of all air-conditioning terminals in the user area within a period is accumulated, and the air-conditioning energy consumption fee of the user is calculated according to a preset billing method.

[0195] The present invention provides a computer-readable storage medium, on which computer program instructions are stored. When the computer program instructions are executed by a processor, a user area is obtained, wherein the user area includes a room area and a public area corresponding to the user; the output energy consumption of all air-conditioning terminals in the user area is collected; the real-time energy consumption of all air-conditioning terminals in the user area within a period is accumulated, and the air-conditioning energy consumption fee of the user is calculated according to a preset billing method.

[0196] It should be understood that the specific features, operations and details described hereinabove about the method of the present invention may also be similarly applied to the device and system of the present invention, or, vice versa. In addition, each step of the method of the present invention described above may be performed by the corresponding parts or units of the device or system of the present invention.

[0197] It should be understood that each module / unit of the device of the present invention can be implemented in whole or in part by software, hardware, firmware or a combination thereof. Each module / unit can be embedded in the processor of the computer device in the form of hardware or firmware or independent of the processor, or can be stored in the memory of the computer device in the form of software for the processor to call to perform the operation of each module / unit. Each module / unit can be implemented as an independent component or module, or two or more modules / units can be implemented as a single component or module.

[0198] In one embodiment, a computer device is provided, which includes a memory and a processor, and the memory stores computer instructions executable by the processor, and the computer instructions instruct the processor to execute each step of the method of the embodiment of the present invention when executed by the processor. The computer device can be a server, a terminal, or any other electronic device with necessary computing and / or processing capabilities in a broad sense. In one embodiment, the computer device may include a processor, a memory, a network interface, a communication interface, etc. connected through a system bus. The processor of the computer device can be used to provide necessary computing, processing and / or control capabilities. The memory of the computer device may include a non-volatile storage medium and an internal memory. An operating system, a computer program, etc. may be stored in or on the non-volatile storage medium. The internal memory can provide an environment for the operation of the operating system and the computer program in the non-volatile storage medium. The network interface and the communication interface of the computer device can be used to connect and communicate with external devices through a network. The steps of the method of the present invention are executed by the processor.

[0199] The present invention may be implemented as a computer-readable storage medium having a computer program stored thereon, which causes the steps of the method of an embodiment of the present invention to be executed when executed by a processor. In one embodiment, the computer program is distributed on a plurality of computer devices or processors coupled to a network so that the computer program is stored, accessed, and executed in a distributed manner by one or more computer devices or processors. A single method step / operation, or two or more method steps / operations, may be performed by a single computer device or processor or by two or more computer devices or processors. One or more method steps / operations may be performed by one or more computer devices or processors, and one or more other method steps / operations may be performed by one or more other computer devices or processors. One or more computer devices or processors may perform a single method step / operation, or perform two or more method steps / operations.

[0200] It can be understood by a person skilled in the art that the method steps of the present invention can be completed by instructing related hardware such as a computer device or a processor through a computer program, and the computer program can be stored in a non-temporary computer-readable storage medium, and the steps of the present invention are executed when the computer program is executed. Depending on the circumstances, any reference to memory, storage, database or other media in this article may include non-volatile and / or volatile memory. Examples of non-volatile memory include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EPROM), flash memory, magnetic tape, floppy disk, magneto-optical data storage device, optical data storage device, hard disk, solid state disk, etc. Examples of volatile memory include random access memory (RAM), external cache memory, etc.

[0201] The various technical features described above can be combined arbitrarily. Although all possible combinations of these technical features are not described, any combination of these technical features should be considered to be covered by this specification as long as there is no contradiction in such combination.

[0202] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for charging air conditioning energy consumption in an office building with centralized cold and heat sources, characterized in that: include: Acquire a user area, where the user area includes a room area and a public area corresponding to the user; Collecting the output energy consumption of all air-conditioning terminals in the user area; The real-time energy consumption of all air-conditioning terminals in the user area within the period is accumulated, and the air-conditioning energy consumption fee of the user is calculated according to a preset billing method.

2. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 1, characterized in that: The obtaining of the user area includes: Each room area has a corresponding relationship with the public area. The same public area corresponds to at least one room area, and one room area corresponds to at least one air-conditioning terminal. Each user has a corresponding relationship with the room area, and any user corresponds to at least one room area; The user area includes all room areas corresponding to the user and the public area corresponding to all the room areas.

3. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 2, characterized in that: The acquisition of all air conditioning terminals in the user area includes: According to the real-time data from the building automation system and data monitoring terminal acquired in real time, it is stored in the real-time database; According to the air-conditioning terminals in all areas in the prior configuration information and combined with the user area, all terminal air-conditioning corresponding to any user are analyzed.

4. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 1, characterized in that: The calculating the air conditioning energy consumption fee of the user according to the preset charging method includes: The supply air cooling and heating amount is calculated according to the VAV and FCU method. The supply air cooling and heating amount is determined by one or more of the supply air temperature, return air temperature, and the water valve status in the real-time air volume. The calculation formula is as follows: Q i =εV i ΔT i / 3600 Among them, ΔTi is the real-time difference between the supply air temperature and the room temperature, V i For real-time operating air volume, Q i is the real-time air supply cooling and heating capacity, and ε is the cooling and heating calculation coefficient.

5. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 1, characterized in that: The step of calculating the air conditioning energy consumption fee of the user according to a preset charging method further includes: The supply air cooling and heating amount is calculated according to the AHU method. The supply air cooling and heating amount is determined by one or more of the supply air temperature and humidity, the fresh air valve opening, the fresh air temperature and humidity, the return air temperature and humidity, the blower frequency or the air volume, the water valve switch state and the air supply state. The calculation formula is as follows: what i =0.1ρ a 5 i |h im -h is | Among them, ρ a is the variable air density, V i is the real-time air flow rate, h im is the enthalpy value of the new return air after mixing at time i, h is is the air supply enthalpy value at time i. If V is not directly collected i For equipment with a rated air volume of 1000MW, V is calculated by using the fan frequency f and the rated air volume C. i , the formula is as follows: V i =f / 50*C According to the enthalpy value of supply air temperature and humidity hs, the fresh air temperature and humidity value hn, the return air temperature and humidity value hr, and the fresh air threshold opening percentage K, the enthalpy value hm of the fresh and return air mixture is calculated as follows: h m =К·h r +(1-К)·h n Among them, h s The enthalpy of air supply is h n is the fresh air enthalpy and h r is the return air temperature and humidity enthalpy.

6. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 5, characterized in that: Also includes: Analyze the VAV ratio of each room on the same floor, and calculate the VAV ratio of a certain user in combination with all the rooms owned by the user on the floor. Calculate the energy consumption of the user's room area based on the air supply cooling and heating capacity of the parent node AHU and the VAV ratio of the user, as well as the energy consumption of the FCU of all the rooms of the user; According to the sum of the energy consumption of each room on the floor and the first total energy consumption of the VAV and FCU on the floor, the ratio of the net total energy consumption of the public area to the sum of the energy consumption of each room on the floor is calculated, and the ratio is determined to be a first common area ratio. The energy consumption of the common area of ​​the user is the energy consumption of the room area multiplied by the first common area ratio; Obtain the gross total energy consumption of the system on the floor and the net total energy consumption of the floor, and calculate a second shared ratio, where the shared energy consumption of the system of the user is the energy consumption of the room area multiplied by the second shared ratio; The total energy consumption of the user is the sum of the energy consumption of the user's room area, the energy consumption of the shared area, and the shared energy consumption of the system.

7. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 6, characterized in that: Also includes: The energy consumption of the first public use area of ​​the user is calculated based on the ratio of the area of ​​the user's room area to the area of ​​all rooms in the building and the energy consumption of the first public use area; The energy consumption of the second public area for a user is obtained by counting the energy consumption during the time period when the user uses the second public area.

8. The method for charging air conditioning energy consumption in an office building with centralized cold and heat sources as claimed in claim 7, characterized in that: Also includes: The energy consumption of the user's overtime work is calculated by changing all rooms on a certain floor into overtime rooms; The energy consumption of the user's room settlement deviation is calculated based on the deviation value obtained from the bill usage and the collected usage, as well as the ratio of the user's room energy consumption to the total room energy consumption; The energy consumption of the user's calculated settlement deviation is calculated based on the deviation between the total cooling and heating data within the period and the cumulative value collected daily within the period, as well as the ratio of the user's room energy consumption to the total room energy consumption.

9. An air conditioning energy consumption billing device in an office building with centralized cold and heat sources, characterized in that: include: An acquisition module, used for acquiring a user area, wherein the user area includes a room area and a public area corresponding to the user; A collection module, used to collect the output energy consumption of all air-conditioning terminals in the user area; The calculation module is used to accumulate the real-time energy consumption of all air-conditioning terminals in the user area within a period, and calculate the air-conditioning energy consumption fee of the user according to a preset billing method.

10. The air conditioning energy consumption billing device in an office building with centralized cold and heat sources as claimed in claim 7, characterized in that: The acquisition module, the collection module and the calculation module are controlled to execute the air conditioning energy consumption billing method in an office building with centralized cold and heat source supply as described in any one of claims 1-8.

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